Patents by Inventor Lars Kovasna

Lars Kovasna has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4666388
    Abstract: Apparatus for forming an opening, such as a window or door, in a concrete structure comprises a form and a device for removing the form from the formed structure. The form has operating members and tension bars for collapsing the sides of the form inwardly. The device comprises a stand having a pair of adjustable length beams carrying hydraulically actuated claw members at their ends for engaging the interior of the form.
    Type: Grant
    Filed: August 29, 1985
    Date of Patent: May 19, 1987
    Assignee: Adema Maskin AB
    Inventors: Lars Kovasna, Gunnar Hornberg